So why review the 0470? Well, it’s a beautiful knife, it appears to be built differently than the other ZT/Sinkevich collabs I’ve reviewed, and I bought the knife at a fantastic price. I hope no one minds.

General Dimensions and Blade Details

The 0470 has an overall length of 7.8″, a 3.4″ blade, weighs 3.3 ounces, and is made in the USA. Like the recently reviewed 0609 this model is aimed towards the EDC enthusiast. This 0470 is thinner, lighter, and more discreet than the ZTs that got the ball rolling for the company.

I still remember the halcyon days of the 0560 and the 0300. Those models put Zero Tolerance on the map, but those were some big knives. Totally impractical for most people, but they paved the way for blades like this 0470. Personally, I’m glad ZT is continuing to head in this direction. I’m sure they will still release some big knives as well.

Lets talk about the blade. It shares the same low slung lines that make a Sinkevich a Sinkevich. It’s a beautiful triangle of steel with a high flat grind, partial swedge, and two-tone satin and stonewashed finish.

A detail I love on the blade of this knife is how the spine has been subtly chamferred up by the jimping. This is a feature on my Shirogorov F3 and on the Sebenza. To see this detail brought to a ~$250 knife is awesome. That chamferring has also been brought to the flipper tab. It eliminates any sharp edges on the flipper that can cut your finger. Another small touch is the generous sharpening choil. Frankly, a sharpening choil something I would expect to see, but it doesn’t always make it into every pocket knife.

A blade shape like this can do no wrong, unless perhaps you are wanting to skin a buck with it. In that case the tip is probably a little too prominent, but for everything else this is a versatile and functional blade shape.

As a quick aside, here is a size comparison with the ZT 0609. They compare favorably in size, but are built differently:

For blade steel ZT went with CPM-20CV. CPM-20CV is made by Crucible Industries in Solvay, New York. CPM-20CV is chemically similar to M390, a high end European steel I have long appreciated. Crucible has a long track record of making high end specialty knife steel. Their catalog includes 154CM, S30V, S35VN, and S90V. They are specialty steel makers and know what they are doing.

CPM-20CV and M390 have both earned a reputation for high hardness and excellent edge retention, while not being as stubborn to sharpen as something like S90V or ZDP-189. CPM-20CV is also stainless and tough. It’s arguably the best all-round blade steel money can buy as of early 2019.

In practice, the blade of my 0470 has been a excellent performer. The blade came razor sharp. The edge bevel was neat and even, and the stock blade easily popped hairs off my arm. After sanitizing the blade thoroughly (ie, wiping it on my shorts), I put the knife into my daily carry rotation. I used it at home and at work for opening mail, breaking down boxes, and food preparation. I used the 0470 in place of my paring knife for vegetables and fruit.

The blade has performed admirably. It tracks through cardboard and holds up well under harder use, but the geometry is nimble enough to slice apples cleanly, route the tops off of strawberries, and mince garlic. Edge retention has been excellent. When the edge begins to slow I show it to my near mythical Spyderco Goldenstone, and all becomes right in the world again. No issues with the edge chipping or rolling, and no signs of rust, staining, or corrosion either.

Handle, Ergonomics, and Pocket Clip

The handle is where things get interesting. If you peruse our pretty decent catalog of ZT reviews, you will notice there is nothing quite like this 0470 with it’s 3-d machined titanium handles and marble carbon fiber inlay. It’s a level of complexity and workmanship I haven’t seen on any of their other production knives.

That’s what drew me to this knife. If the handle didn’t have this unique twist I probably would have passed on it. The end result is an simple and classy handle. It’s elegant, not ornate. And it has been done beautifully. There is not a stray mark on this knife. And I love the simplicity of the handle construction. There is only one body screw at the tail end.

Inside the titanium handle pieces have been deeply milled out to reduce the weight. Holding it all together is a black aluminum backspacer with an integrated lanyard hole. Again, this integrated lanyard hole is a feature found on my significantly more expensive Shirogorov. Since I’m not a big lanyard guy I really appreciate how they avoided drilling a big ugly hole into the handle of the knife. It’s a level of care you simply don’t see on most pocket knives.

This detailed disassembly video shows the tight tolerances and attention to detail of this knife. Impressive. I don’t think I’ll be taking my knife apart any time soon.

The ergonomics of the 0470 are excellent. It’s a simple open design that will accommodate most hand sizes, and the spine of the canted handle meets my palm easily. The balance point is just behind the pivot, making the knife feel light and natural in hand.

Texture has been used strategically on the 0470. A run of fine jimping on the spine of the blade is balanced by coarser jimping on the back of the handle. The handle pieces aren’t heavily textured, but they are deeply contoured to meet your fingers and given an attractive end mill finish. The net result is a positive grip and a knife that isn’t going anywhere. It’s comfortable to hold in forward and reverse grips.

The pocket clip is a simple metal spring clip. No 3-d machining on this model. I’m OK with that. The clip design is simple and effective. It was designed for this knife and follows the lines of the handle. It also lacks any overt branding. It offers good spring retention and is easy to insert and remove from your pocket. The handle is drilled and tapped for ambidextrous tip up carry. It’s not a deep carry clip, but most of the handle is buried.

Here is your in pocket shot:

In practice the 0470 carries well. With a near 3.5″ blade, the 0470 is still on the larger side of a true EDC knife for me. It is substantially bigger than the Dragonfly 2, the most pocketable folding knife of all time.

But I don’t think comparing the 0470 to a DF2 is fair. In defense of the 0470, it isn’t a huge knife, and it has a gentleman’s folder quality to it. It’s just a little over 3 ounces. For its size the knife carries well and the pocket clip does a good job keeping the knife in place.

Deployment and Lockup

The 0470 is a titanium framelock flipper running on caged bearings. The flipper keeps a low profile and heavily jimped. The action is smooth and easy. After disengaging the lock the blade will fall shut with a flick of the wrist.

However, the detent on this knife is surprisingly light. The blade doesn’t fall out of the handle, but it’s not the level of snappiness I’m used to. The best way to open this blade is using the light-switch technique. Push buttoning it gives me mixed results. The angle of the flipper tab seems to be designed for light switching.

I find the light detent highly unusual given ZT’s long track record of dialed in detents. I would often comment in my reviews how they are the industry standard in my book. But here the 0470’s detent was surprisingly light, and I don’t think I’m alone either. The knife works fine and with the right technique there are no issues opening the knife, but those expecting the typical action of a ZT flipper will be disappointed. At least initially. Now that I know to lightswitch it I’m able to get the blade open every time, but still this came as a surprise.

For lockup we have a titanium framelock with stainless steel lockbar insert. Thankfully there were no surprises with the lockup on this knife. Perfectly rock solid, with early engagement, and easy to disengage. No sticking, and absolutely no blade play. This is exactly what I would expect from a Zero Tolerance blade.

Blade centering is also perfect on my knife.

Zero Tolerance 0470 Review – Final Thoughts

If you are like me, and think there is no room for another ZT in your collection, then the 0470 might just change your mind. It’s a different knife from this company. Just when I was beginning to lose interest in their offerings they tempted me with this dressed up EDC knife.

I think this constant evolution of their products is what keeps the brand interesting and relevant. They continually step out of their comfort zone, and don’t mind pivoting in different directions. Another example of this is their 2019 0022. It’s the smallest knife they have made, and I just might have to grab one.

But lets get back to the 0470 in particular. I love the classic Sinkevich lines paired with the heavily machined and highly engineered titanium handles. The carbon fiber inlay adds a touch of class. The blade cuts well, the handle is comfortable, the fit and finish is top notch. It’s everything you would expect executed near perfectly.

The only surprise was the light detent. Frankly when I first got this knife I thought something was wrong with it. I was shocked. But now that I’ve had the chance to carry and use the knife for a few months, I have no issues getting the blade open. And my understanding is that this is typical on the 0470. If you own the knife please let me know how the flipper action is for you.

At the end of the day I think the pros far outweigh any cons cons. At ~$250 this is not a cheap knife, but you can see where the money went. I have enjoyed mine and can easily recommend it if the design intrigues you.

I recommend purchasing the Zero Tolerance 0470 at Amazon, or BladeHQ. Please consider that by purchasing things through any of the links on this website you support BladeReviews.com, and help produce future reviews. Thank you very much.

The Zero Tolerance 0609 is an R.J. Martin design, and is another step in ZT’s trend of releasing smaller, more EDC friendly knives. The last R.J. Martin / ZT collab I handled was the 0600, a massive, 9.5″ framelock flipper. It was big and beautiful piece, but few people are going to want to carry a folding knife with a 4.25″ blade on a regular basis. Plus it was a $400 limited edition knife.

The 0609 is much more reasonable in its footprint, price point, and availability. When you consider that I reviewed pieces like the 0300 and 0560 only a handful of years ago, it shows how the market has evolved. Big chunky knives are losing favor to more pocket friendly offerings. Lets take a deep dive into this recent release from Zero Tolerance.

General Dimensions and Blade Details

The 0609 has an overall length of 7.4″, a 3.4″ blade, weighs 3.3 ounces, and is made in the USA. This is a good size knife, but you may be surprised to learn that the 0609 is both smaller and lighter than a Benchmade Griptilian. I think this is a great size for those wanting a full size knife, but still something thin, lightweight, and special.

The blade is a twist on R.J.’s classic drop point, found on models from his Q36 customs, to the Kershaw Volt. This particular blade has been given a harpoon and swedge, lending a more exotic, technical look to the knife.

Blade stock is thin, clocking in at .12″ (just over 3mm thick), and the high flat grind combined with a wide edge makes for a knife that slices well right out of the box. I had no problem slicing apples, and the knife absolutely decimates cardboard.

Blade steel is CPM-20CV, which is chemically similar to M390, but made in the USA by Crucible. Edge retention has been excellent and there are no signs of chipping or rolling. No issues with rust or corrosion either.

The knife has served well in its role as a high end EDC or “gentleman’s tactical” folding knife. It’s a knife that has been built for speed. I can’t help analogizing it to a sports car. It’s low-slung and has a premium feel.

Handle, Ergonomics, and Pocket Clip

The 0609’s handle is comprised of two heavily milled pieces of bronze anodized titanium. The anodization is interesting, as the bronze picks up hues of blue and purple from the oils on your skin. I think it’s a nice change of pace over standard raw titanium, but wonder how it will wear over time.

Handle construction is simple and clean. You have two simple handle pillars, and then you have the oversized See-Through Pivot (STP). The STP is an R.J. Martin creation that allows you to see through the pivot. It’s cool and different, but the draw back is you need to buy a special tool from KAI to adjust the pivot or take apart the knife. That’s a definite drawback to an otherwise practical offering from ZT. Still, the STP is one of the more interesting details of the knife.

The ergonomics of the 0609 are pretty good. The handle is long enough to accommodate a full 4 finger grip, while the textured titanium, jimped thumb ramp and spine, and finger grooves all serve to lock your hand in place. The only rub is that this knife is 1.125″ at its widest. Its very thin, making it great for carry, but less comfortable for extended use. Personally, I’m fine with sacrificing a little ergonomic comfort for a lighter and more streamlined knife, but if you are expecting this to fill the hand like an 0808, well, it won’t.

For carry the 0609 comes with a simple inoffensive pocket clip. Even the Zero Tolerance logo has been dialed back on the clip of this knife. Gone are the days of the big “ZT” billboard. Now we have “Zero Tolerance” lettered in a small and spare font. The clip offers good retention and the knife rides relatively deep in the pocket. The handle has been drilled and tapped for ambidextrous tip up carry.

In practice the 0609 carries great. It’s slim, and lightweight. You will quickly forget that you are even carrying it. The sturdy pocket clip keeps the knife firmly in place. Perhaps a deep carry clip would have been nice, but this clip is small and stays out of the way.

Deployment and Lockup

Like most ZTs, this is a titanium framelock flipper. And once again, Zero Tolerance demonstrates that they know how to put a titanium framelock flipper together. The flipper tab is prominent and lightly jimped. The blade pops open easily with either a push button or lightswitch flick. The detent is strong, and the blade rides smoothly on Kershaw’s KVT caged bearing system.

For lockup we have a titanium framelock with stainless steel lockbar insert. Lockup is early and secure. There is no play in any direction and the lockbar disengages easily without any stick. I often consider Zero Tolerance to be the best in the business when it comes to production titanium framelock flippers. The 0609 is another example of why that’s the case.

Here is a shot next to my ZT O450CF. It’s actually not much bigger than the 0450CF. Mostly it’s a wider knife than the 0450CF.

Blade centering is perfect on my knife.

Zero Tolerance 0609 Review – Final Thoughts

I think this is the most refined non-limited production ZT I have handled to date. Clearly they have listened to customer feedback, and this strikes me as an evolution of the Zero Tolerance lineup. Some people may want big chunky folding knives, but there are plenty of us who want something thin and light.

While the brand has been obviously trending towards more practical knives over the years, this 0609 strikes me as the total package. A slick R.J. Martin design, a thinly ground blade married to a lightweight and strong titanium handle, with great flipping action and solid lockup. What’s not to like? The answer is “not much”. It’s a great knife.

Even the price is reasonable. These retail for a little over $200. Not cheap by any stretch, but not unreasonable for a USA made premium pocket knife either. This is easily my favorite regular production Zero Tolerance folder to date. Highly recommended.

I recommend purchasing the Zero Tolerance 0609 at Amazon or BladeHQ. Please consider that buying anything through any of the links on this website helps support BladeReviews.com, and keeps the site going. As always, any and all support is greatly appreciated. Thank you very much.

I don’t know about you, but sometimes I lust after knives for months, or even years, before pulling the trigger. That was the case with this Zero Tolerance 0450CF. The original 0450 was cool, but the carbon fiber version put me over the top. It’s a little lighter and sleeker, and the choice of green anodized accents isn’t something you see on a lot of knives. I decided I wanted one, but could never find a decent deal on it.

Fast forward a couple years later, and I received a trade offer that included this 0450CF. Right on. I immediately responded back that I was interested, and a few days later the knife was at my doorstep.

By way of a more formal introduction, the 0450 series is a riff on the original Dimitry Sinkevich designed 0454CF that I reviewed back in 2014. Chad McBroom reviewed the mass marketed 0452CF and Ben reviewed the shrunken down full titanium 0450. I’ve got the ultra light 0450CF for your consideration today.

General Dimensions and Blade Details

The 0450CF has an over all length of 7.375″, a 3.25″ blade, and weighs a mere 2.45 ounces. Like all Zero Tolerance knives, the 0450CF is made in the USA.

The 0450 and the 0450CF are reactions to the knife market. Zero Tolerance is know for large overbuilt knives, but they received feedback that everyone didn’t want to carry around a big honking pocket knife. So the 0450 hit the scene, and then this 0450CF took that even further by replacing the titanium show side handle with carbon fiber. This shaved over almost half an ounce off the already lightweight 0450. This, my friends, makes for an ideal EDC knife in my book.

The 0450CF shares the same low slung blade that made us all fall in love with the 0454CF when it hit the scene. It’s a long, sleek, modified drop point blade, featuring a little belly and plenty of tip. The knife has a high flat grind and a decorative swedge. The blade has been given a semi-glossy black DLC coating. The edge has been uniformly applied, and there is a sharpening choil so you can easily sharpen this blade from tip to heel.

ZT opted for S35VN for the blade steel. Regulars to the site or high end knives need no introduction to S35VN. It’s a high performance stainless steel from Crucible designed specificaly for pocket knives with the help of Chris Reeve. It’s an excellent all round blade steel and a good choice for small pocket knives like this as it offers a good balance of edge retention, toughness, and ease of sharpening. I like S35VN generally, and they did a great job with the heat treat on this 0450CF. As always if you want to dive deeper into blade steel check out our steel section for all sorts of additional info.

Practically speaking this little 0450CF is a capable cutter. The blade shape is perfect for getting under envelopes, breaking down boxes, cutting fruit, and performing all the little odd ball chores I require of my EDC knives. That said, I must agree with Ben that this knife is not the best slicer. The partial flat grind binds up in material. While it cuts, it’s no Alox Cadet. This is probably my biggest gripe with the knife.

The S35VN blade has held up great, and so has the Diamond-Like Carbon (DLC) coating. DLC coatings are among the best money can buy, and unless you scrape this knife on concrete or metal it will hold up well.

Handle, Ergonomics, and Pocket Clip

The handle of the 0450CF is a solid piece of carbon fiber on the show side, and a black DLC coated titantium framelock on the reverse. The knife is held together with two green aluminum standoffs and an oversized pivot. Construction is simple yet elegant. All the hardware is black save for the green anodized standoffs. The fit and finish is exceptional. The screws are all the right length, the parts line up perfectly, and the finish work is excellent. The carbon fiber is lightly textured, and shimmers slightly in the light. This handle has been beautifully done.

The 0450CF is a small knife, but it doesn’t compromise in the ergonomics department. Dimitry’s design is simple and it should work well for most people. I take an “XL” size glove and have no problem getting a full four finger grip on this knife.

There is a short row of jimping on the spine that provides you with a little traction and something to index your thumb on. Beyond that there is not much in the way of texture. That’s fine by me as I don’t think this knife needs aggressive texturing. It works well as is.

The pocket clip is a standard parkerized black spoon style pocket clip. It’s relatively discreet and unobtrusive. While it’s not a true deep carry clip, it buries the majority of the knife in your pocket and keeps the 0450CF tucked away. The clip is swappable for right or left side tip up carry. A deep carry clip would have been nice.

I have carried this knife quite a bit. The 0450CF is a knife that you forget you are carrying. At just under 2.5 ounces this is not going to pull your pants down. The clip has great retention and the knife stays where you want it to in your pocket.

Deployment and Lockup

This is a Dimitry Sinkevich designed flipper made by Zero Tolerance, so the flipping action is outstanding. The detent is perfectly tuned for crisp, snappy flipping action each and every time. I’ve never “flubbed the flip” with this knife and I’d say the action is a solid “8” on the 0-10 scale. It’s good. Inside you have a caged bearing system. It is exceptionally smooth and you can shake the knife closed easily.

Please note I’m a lefty, so I don’t have any issues with putting my fingers on the lock bar when flipping the knife. I tried flipping this 0450CF with my right hand. Beside it being incredibly awkward for me, it works fine. No issues flipping open this knife. I think ZT fixed the issue that plagued their earlier knives.

Here is a shot of the 0450CF next to another excellent EDC knife, the Spyderco Sage 1:

For lockup we have a titanium frame lock with a stainless steel insert. Zero Tolerance does such a good job with these, that I almost feel that writing this section is unnecessary. The lock bar engages early and securely. The lockup is rock solid with zero blade play in any direction. The lock is smooth and easy to manipulate with no lock stick. This is titanium frame lock perfection and continues to be something of a gold standard in my world.

Blade centering is dead nuts center on my knife.

Zero Tolerance 0450CF Review – Final Thoughts

Ben was a little lukewarm on his 0450. He didn’t like the way the knife cut, the ergonomics, and he had issues with the action. Aside from that Mrs. Lincoln tells me the play was OK.

I think Ben raises valid points. A little knife like this should zip through stuff, but the combination of narrow blade and partial flat grind impacts the 450CF’s slicing performance. It still cuts, but it could be better. Personally, the ergonomics were spot on for my hand, and I found that the 0450CF flipped great. Ergonomics will vary from person to person, and I think ZT addressed the flipping action.

All in all, I am glad I picked up this little 0450CF. It’s as cool in person as I always hoped. I like the look of it over the standard 0450 and how it’s even lighter with this carbon fiber handle.

The 0450CF is an excellent little EDC knife in my book. With a retail price at close to $200 it’s not cheap, but I’m glad I went for it. The 0450 is probably ZT’s most practical EDC offering for the average person. This carbon fiber version takes things up a notch.

I recommend purchasing the Zero Tolerance 0450CF at Amazon or BladeHQ. Please consider that buying anything through any of the links on this website helps support BladeReviews.com, and keeps the site going. As always, any and all support is greatly appreciated. Thank you very much.

I think right off the bat, to even consider buying a 0055 you need to be willing to make some compromises. This knife is not going to work like a “normal” regularly ground drop point. If you are buying a knife to replace your well worn Griptilian or Para 2, then you will want to look elsewhere for that foundation piece for your collection. The 0055 is further out there, for those seeking something different at the expense of pure practicality. It’s not a knife for the masses. With that caveat out of the way lets explore this unique offering from Zero Tolerance.

General Dimensions and Blade Details

The 0055 has an overall length of 8.75″, a 3.75″ blade, weighs 5.0 ounces, and is made in the USA. Despite being a larger knife, the 0055 feels agile for its size. It’s relatively thin, relatively light, and has a narrow profile. You can EDC it, but I’m not sure it’s something you will be able to easily use in public. It may be mistaken for a piece of Klingon hardware before being recognized as a utility knife.

The blade is what I would describe as a modified reverse tanto. You don’t see many reverse tantos, the most famous of which is found on the Benchmade 940. Still, it can be a practical shape, marrying the utility of a drop point with the reinforced tip of a tanto. Here, the profile is modified so that there is no belly, almost an abstraction of an American tanto blade. Adding to the intrigue is a compound grind.

My immediate reaction to the 0055’s blade was mild confusion, quickly met by acceptance for what it is. You have to suspend convention a bit to get into the spirit of this knife. It’s different. Otherwise there is no point to even considering the 0055.

The blade is no doubt configured to fit into the equally angular handle. The compound grind is odd in that the thinner grind is towards the tip. That seems a little backwards, as generally speaking I think you would want a thinner grind towards the handle for detailed cuts, and for chores like cutting food and rope, but the thin tip section is good for cutting up cardboard boxes, although it can be difficult to orient this knife properly with your cutting medium due to the non-traditional blade shape.

I will say that execution of the blade is nice. The grinds are even and precise. The edge has been nicely applied. The blade itself has been given an almost matte stonewashed finish. The quality is everything you would expect from Zero Tolerance.

ZT decided on S35VN for the blade steel. S35VN is a fine choice for any higher end folder. I continue to appreciate the combination of easy sharpening, edge retention, and stain resistance that S35VN offers. It’s a fine steel and a worthy upgrade over it’s predecessor S30V.

Having absolutely no belly to speak of, the 0055 is challenging to sharpen, especially if you want to maintain the crisp transition between the compound grind. This “inflection point” can get rounded over if you aren’t careful or decide to sharpen this on a rod sharpener like the Sharpmaker. You have to treat this like 2 separate edges to maintain the character of the factory blade, or otherwise you will slowly round this transition over like a rock in a stream.

And ironically it’s not always easy to evenly sharpen a straight edge. It takes some care. The 0055 is not a knife for novice sharpeners, and wouldn’t be my first choice for a field knife.

Handle, Ergonomics, and Pocket Clip

The handle of the 0055 is technically rich. The outer surface of the titanium handles has been intricately machined. Inside ZT has milled out the pockets to lighten the knife further. A decorative pivot and elegant blue floating backspacer holds everything together. The technical precision of Zero Tolerance is on full display here, and it’s that ability to execute that makes their products so consistently good. This handle is no exception. Everything is dialed in, from the finish on the titanium to the black hardware. There is not an errant machining mark, or jutting screw on this knife. Everything feels purposeful and controlled.

The quality is unquestionable, so the real test is how you feel about the design. I happen to like it. The coffin shaped handle encapsulates the closed blade. It’s different, but cohesive. Gus Cecchini is a world renown knife designer, and his talents are apparent.

Surprisingly, the 0055 feels natural in your hand. That angular handle design doesn’t look particularly comfortable, but it subtly cradles the palm of your hand, while your thumb naturally finds its way to the spine of the blade. Although the handle looks complicated, the lines of the handle are actually simple. What is odd about the 0055 is the placement of the edge. The edge pulls away from you, so depending on the task you may find yourself re-orienting the knife towards the cutting media. Not the most practical configuration, nor is it my favorite, but the 0055 is still capable of getting work done if you are up for the task.

The pocket clip could have been an opportunity to really go off the deep end. Instead Gus and ZT went with a relatively simple spring clip. The shape is non-traditional, but not so far off the reservation that it becomes goofy. It also doesn’t have the typical “ZERO TOLERANCE” billboard, which is a welcome departure. The end result is a clip that compliments the knife, but isn’t remarkable.

The 0055 caries well for a larger knife. Again, ZT has taken steps to keep the weight down, and it’s a relatively thin design. While this isn’t a deep carry clip, the knife carries unobtrusively. The only issue is that the framelock relief is right next to where the clip meets the handle, and I have found that the fabric of your pocket tends to bind up and get caught in the framelock relief. Not a deal breaker, and you could always swap the clip to the show side, but it’s worth noting.

Deployment and Lockup

A part of what makes the 0055 unique to the production knife world is the use of Gus Cecchini’s Spring Loaded Tab (SLT) system. The SLT is a spring loaded flipper tab, which is used to open this manual flipper. You pull back on the tab lightly expose it, and then pull back with full force to release the blade like a typical flipper.

I have found that the SLT system works great. At least in the short term. It successfully opens up the knife, is fun to use, stays out of the way a little better then a traditional flipper, and it doesn’t spoil the lines of the knife as much as a traditional flipper.

The biggest con to the SLT system is that it’s more complicated then a regular flipper tab. Part of the beauty of a flipper is the simplicity. The SLT system is definitely an example of over engineering. It’s just like developing a special pressurized pen to write in space, when you can easily accomplish the same task with a pencil.

Personally I enjoy the novelty of the SLT system on this knife. When it comes to man’s oldest tool, it has become increasingly tough to innovate. Here Gus has managed to create something different. Even if it lacks the elegance of a standard flipper, it has at least been nicely executed and it’s fully functional. The knife flips great, thanks in part to a robust detent and a smooth caged bearing system. I’d rate it a solid “8” on a 1-10 scale. While I wouldn’t want the SLT system on every knife, it is a big part of what made the 0055 interesting to me.

For lockup we have a titanium frame lock with a steel lock bar insert. Just like on every other Zero Tolerance framelock I have reviewed, the lock has been beautifully executed. It’s rock solid and there is no blade play or lockbar stick at all. This continues to be something of a gold standard in framelock knives.

Zero Tolerance 0055 Review – Final Thoughts

The 0055 is a knife you will either connect with or dismiss, and it may take a while to grow on you. I happen to enjoy this funky design thanks in large part to Zero Tolerance’s brilliant execution. I think a lesser manufacturer would have a hell of a time getting away with a design like the 0055. Here the knife has been so finely tuned, that I couldn’t help but appreciate it.

The 0055 is not a knife for a 1 knife collection. Hell, I don’t think it’s a knife for a 10 knife collection. The 0055 is a knife for fans of Gus Cecchini and his work, or fans of unique designs. If your collection is crowded with the work of designers like G&G Hawk, and Serge Pachenko, then the 0055 could be right up your alley. But if you are looking for a more traditional Zero Tolerance folder, then I have to recommend something like the ZT 0562.

If the 0055 intrigues you, then I recommend checking it out. I have enjoyed owning mine, and appreciate it for it’s non-traditional nature. However, if you are considering this as your only premium pocket knife, then I’d suggest looking elsewhere.

I recommend purchasing the Zero Tolerance 0055 at Amazon or BladeHQ. Please consider that purchasing anything through any of the links on this website helps support BladeReviews.com, and keeps the site going. As always, any and all support is greatly appreciated. Thank you very much.

Despite positioning itself as a maker of hard use tools for hardcore individuals, Zero Tolerance has always had more universal appeal than its marketing would suggest – and I don’t think the company’s appeal has ever been wider than it is today.

Unlike sister brand Kershaw, there isn’t any internal division between ZT products: there aren’t ‘cheap’ and ‘expensive’ ZTs in the sense that there are cheap and expensive Kershaws; everything they make falls within the same general bracket of impressive machining and high-end materials; the price differences just indicate which high materials you’re getting and how much impressive machining you see.

And while ZTs may have been considered pretty pricey back in the day, as the market has shifted upwards their prices have remained relatively consistent, so that they seem more reasonable now than they did five years ago. So as the knife world has shifted into its current strata of price brackets, Zero Tolerance has found itself in a sweet spot between accessibility and quality.

All of this combines to put ZT pretty much at the center of current knife enthusiast culture. I’m sure there are soldiers, cops, and first responders who carry and use Zero Tolerence knives, but I would bet there are a lot more ZTs in the pockets of enthusiasts and on the shelves of collectors. That being said there has never been a ZT knife that really spoke to me.

I couldn’t find one that was ‘just right;’ this knife had a great design but is assisted, that one was the right size but inordinately heavy. It is this way for me with every knife ZT releases. Eventually, waiting for the Perfect Zero Tolerance became a kind of mania. Perfect design, perfect size, perfect price: I figured if I waited long enough such a ZT would come out.

But it never did, and eventually I got tired of waiting and picked up the knife that came closest to that ephemeral, unrealized Perfect ZT I have in my mind: the Dmitry Sinkevich-designed ZT 0450. It can’t possibly be perfect, but is it any good? Let’s take a look.

General Dimensions and Blade Details

The 0450 has a blade length of 3 3/16”, a handle length of 4 1/8”, and an overall length of 7 3/8”. It weighs 3.04 oz. and is made in the USA. I want to mention here that this is a damn good looking knife. It comes up later and I don’t want to keep repeating myself in the interim, so just keep in mind that almost every inch of this knife is nice to look at.

The ZT 0450’s racy drop point is a good EDC cutter. It has much more straight edge than belly, which I don’t necessarily mind, and a very sharp tip. A chunky grind means two things: 1) both the tip and cutting edge are hardy enough to beat on, however 2) it isn’t as good of a slicer as you would hope for. Given the fast, futuristic, aggressive styling I was hoping for equally aggressive cutting performance but that isn’t what you get here.

However, trading some sliciness for durability isn’t exactly Faustian as long as cutting performance is still the favored attribute to some degree, and the 0450 meets this criterion. It’s best-suited for medium-duty tasks like cutting through cardboard or plastic, but you aren’t going to hate slicing food with it either. It works.

When Zero Tolerance began using Elmax a few years ago accusations of improper heat treating and burnt edges were leveled at them from the enthusiast quarter. The 0450 is made from S35VN, not Elmax, but there is a small portion near the tip of my 0450’s blade that looks burned:

From what I understand, this occurs during the edge grinding portion of manufacturing, and is localized to the burned area – in other words, if it is burned, it shouldn’t affect the performance of the edge in general – and my experience bears this out.

S35VN is great. I would almost say it’s boring, because it doesn’t have the epic abilities and tragic flaws of a steel like M4, but for the average user (and most enthusiasts are average users AT BEST) that is a good thing. I’m convinced that you could sharpen S35VN with even a rudimentary setup and some patience. The S35VN here performed just as well as I expected it to, and if there were any problems in the burned portion I didn’t notice.

Handle, Ergonomics, and Pocket Clip

One of my biggest ergonomic pet peeves is when a knife has a beak or a scoop at the butt end of its handle that either doesn’t accommodate all four fingers ahead of it, or that makes my fingers feel crammed because it ushers them too close together. I really want this issue to become the Too Many Finger Grooves of 2017, because it nearly ruined the Para 3 for me and designers need to stop doing it.

By all accounts it looked like the 0450 would have this problem, and even now I’m not sure that it doesn’t. I can get all my fingers between the finger groove and the beginning of the beak, but not easily, comfortably, or without premeditation; my fingers would never fall across the handle this way naturally.

But the way I think you’re supposed to hold the knife is how I ended up holding the Para 3: with my index finger in the groove, my middle and ring in the “valley,” and my pinky landing on the far side of the beak. This feels natural, but, again, it isn’t the natural way my hand wants to hold the knife.

If I just grab the knife without thinking, my pinky lands right on the tip of the beak. This doesn’t sound like it would be comfortable, but thanks to the big chamfer around the scales, the tip of the beak isn’t too pointy and it works. And even during hard cuts this wasn’t that uncomfortable because most of the pressure is focused on the portion of the knife between your thumb and forefinger.

So I don’t know where I come down on this. The way it appears the knife is designed to be held isn’t natural, and the way it seems natural to hold it doesn’t feel right, even if it isn’t intolerable. At the end of the day I guess I’m okay with this handle, because it allows for a very slim and stylish profile, and going into it you know the 0450 isn’t going to be an ergonomic masterpiece.

The 0450 itself is so very narrow that it would be a pretty decent carry regardless of what kind of clip it had. This is one of very few flipper knives whose flipper tab doesn’t annoy me in the pocket, and I think that’s a function of the knife’s extreme narrowness. The 0450 would be a great carry even with a bad pocket clip, but hey: the clip here is anguish free. The same clip seen on the Kershaw Dividend, and in that review I expressed a little anxiety about its stability over time, but I’ve had no issues here.

Deployment and Lockup

I’m going to grouse a lot in this section so I’ll say this up front: The ZT 0450’s action is fast, sure, very snappy, addicting, and fun. The flipper tab is well designed. It is a great example of why flippers are so hot right now. Okay, grousing starts now.

I was prepared for the lock bar issue, and it is definitely present: if your fingers are on anywhere on the lock bar, the detent is such that the knife will not open – it feels almost like you have a secondary safety feature engaged. When I first got the knife I had a couple attempted deployments where the blade refused to budge.

However, if you align your fingers with the clip it keeps them off the bar; now that’s where my fingers naturally goes when I flip open this knife. Still, not cool, and from what I’ve seen it’s present on newer models as well. I’d like to see ZT put this issue to bed.

I think ball bearing pivots are bad. I hope the recent issues with the Advocate will precipate a move back to traditional washers, which are more durable, have no moving parts, are easier to maintain, and don’t cause as much unnecessary wear. Ball bearings against naked titanium (as we have on the 0450) is probably asking for trouble in the long term – albeit in the long, long term that most of us won’t see, as we trade and swap knives and carry different ones on different days. But still.

I also think that the ZT 0450’s fall shut action is dangerous and not to be desired. I’ve cut myself more times on the ZT 0450 than any other knife I’ve owned, either because it rolled shut so fast I didn’t have time to get my knuckles out of the way, or I pushed it a little bit and it gained enough momentum to keep rolling when I didn’t want or expect it to. Not necessary.

Lockup via titanium frame lock with a steel insert, is good however. If you look at the knife from the side, it doesn’t seem that a lot of the blade tang actually makes contact with the lock face, and disengagement has no feedback or friction whatsoever, but there is no blade play and the lock has never been other than stable and reliable. The double over-travel stop provided by the insert and by the clip is a nice touch as well.

Zero Tolerance 0450 Review – Final Thoughts

There is no meaningful area in which the Zero Tolerance 0450 excels other than carry. It isn’t a great cutter. Ergonomically, it’s kind of a mess. The deployment is problematic. But I still like it.

As much as I hate to say it it comes down to the look. Sinkevich has one of the strongest aesthetics around and the 0450 benefits greatly from that. It isn’t my style necessarily, but we don’t see a lot of knives that are this visually confident, and I think I responded to that. If you showed me a less interesting design that had all of these quirks and problems, I would never even think of buying it.

Not exactly the resounding praise, but praise nonetheless. I can’t not like this knife, even if there are so many things about it that I don’t like. It stops just short of brilliance but looks stunning doing it.

I recommend purchasing the Zero Tolerance 0450 at Amazon and BladeHQ. Please consider that purchasing anything through any of the links on this website helps support BladeReviews.com, and keeps the site going. As always, any and all support is greatly appreciated. Thank you very much.

Alright, peer pressure, you win. You finally got to me. After holding out for god knows how long, I finally jumped on the titanium-flipper-framelock (henceforth TFF) bandwagon. Not just any TFF, mind: if I’m challenging my own tastes, I’m going all the way. Full bore. Thus, I decided to pick up a Zero Tolerance; my first ZT, excepting my brief flirtation with one of their pens. The only concession I granted to my own predilections was blade length, and that’s in part due to workplace regulations.

The Zero Tolerance 0900 is a design by Les George that’s based on his “Mini Harpy”, but which also bears a ton of similarity to his ESR series. Les’s design aesthetic is tough to pin down, but his fascination with drop points and simple lines gives me the warm fuzzies inside. Honestly, I’m glad ZT picked a relatively conservative designer for their first sub-3” knife. No tanto point, no funky recurve. Just a solid design.

One of the reasons I steered clear of TFF’s was that I (persnickety a-hole that I am) could always find something to complain about. Whether my excuse was the lack of a lock-bar insert, the steel not being quite good enough, or the blade length being a touch too long for polite company, there was always an excuse. Not anymore. All of the reasons that otherwise would stop me from reviewing a TFF are gone, and my pretensions are crumbling around me. On that note, let’s get into the review.

General Dimensions and Blade Details

Neither Zero Tolerance nor Les George are known for dainty designs, so it should come as no surprise that their collaboration – though short in the blade – is a bit of a tank, weighing in at 4.3 oz. The 0900 has a 2.7” blade, a 3.9” handle, and an overall length of 6.6”. Most of the time I don’t feel the need to mention weight ratios, but this is a lot of weight for such a short blade. It’s shorter and heavier than the infamous Kershaw Cryo. The balance point of the 0900 is perfectly set in the first (and only) finger scallop, so the knife isn’t poorly weighted, just dense. Very dense.

Although this is my first ZT, it isn’t the first I’ve handled. A good friend of mine is firmly in the Zero Tolerance camp, and more than a few of their offerings have passed through his collection at one point or another. Handling those set my expectations pretty high. For the most part those were met; apart from one fatal flaw, that is. The secondary bevel is slightly asymmetric at the tip of the knife. I don’t know how ZT could let this leave the factory in such condition.*

*please don’t kill me KAI, that was sarcasm

I’m a bit of a stickler for thin grinds, so the chunky blade of the 0900 made me hesitate to pick one up. Fortunately, those fears were unfounded. The 0900 is a much better slicer than expected; the wide blade and high grind gets it thin enough behind the edge to do some real work. So in that sense, it outperformed my expectations. Sadly, it’s still a thick chunk of metal, and the high flat grind can only do so much to help. When compared to other knives in its class – notably the Spyderco Techno and the DPx HEAT/F – the 0900 falls closer to the Techno than the HEAT. That’s a good thing in my book.

The blade is S35VN, which is probably one of the most well-rounded steels on the market. It’s easier to sharpen than its predecessor S30V and it chips less. Mine arrived with an edge so keen I felt it on my finger before my eyes registered contact. I’ll grant that I haven’t been able to maintain that level of sharpness, but I’m not exactly a gifted sharpener. Infrequent stropping has kept it sharp enough for my needs.

Handle, Ergonomics, and Carry

Les George tends to use fairly simple lines in most of his designs. As a result, Zero Tolerance didn’t have to flex outside of their comfort range – at least, not far out of it – to produce this for a mass market. A good comparison is the ZT0220, designed by Jens Anso. Anso’s aesthetic is more avant-garde and less likely to appeal to a broad market. You can see some of his design aesthetic in the 0220, but it’s so muted that his touch isn’t immediately clear. By contrast, Les’s design aesthetic is much more conservative, and thus easier to translate. Ultimately this feels like a Les George produced by Zero Tolerance, not a Zero Tolerance designed by Les George.

In my experience, ZT knives have had good (but not great) ergonomics. I’ve occasionally been blown away: the contoured handle of the 0454 and the thumb placement on the 0392 come to mind, but those are the exceptions, not the rule. As such, I expected the 0900 to be solid in the hand, but nothing to write home about. That was a mistake on my part. This knife melts into my hand in a way that I never would have expected. It almost sings. My error lay in assuming that the contours were simply for visual appeal, and that otherwise it would feel like any other slab-handled knife. Photographs did the design no favors. The contours are deep and well chamfered, allowing your palm to wrap around the handle without feeling like you’re holding a slab of metal.

Sadly, this knife carries about as well as expected: by that I mean that you need the right pants to carry it securely. Part of the problem is the clip. What makes it great in the hand makes it a bit unreliable in the pocket: allow me to explain. The 0900 (like many modern ZT’s) uses KAI’s deep carry pocket clip. It’s unobtrusive and matches the lines of this particular knife, but has a very thin point of contact on a very wide handle. This problem is exacerbated by the placement of the clip, as around half of the point of contact hovers over the lock bar, which means it’s hovering over empty space when the knife is closed. In work pants, this hasn’t been an issue, but in dress pants, quick-drying shorts, or other thin materials, it’s lead to some anxiety.

Deployment and Lockup

This is the part where I eat a healthy dose of crow. As much as I dislike the market’s obsession with flippers, I have to admit that the 0900 is significantly more fun to fidget with than any other knife I own. The deployment is crisp, clean, and requires zero wrist flick. No weird problems with the lockbar were experienced. Keep everything well-oiled, keep grit out of the bearing race, and you’ll be perfectly satisfied. It’s worth noting that I haven’t seen any of the odd lockbar issues others experienced on the 0450.

What can I say? There’s no stick, and lock up has consistently fallen around 40%. The replaceable steel insert is a very nice touch. In addition to warding off lock stick and making potential repairs less onerous, it also functions as an overtravel stop. To date, I haven’t experienced lock rock or blade play, and I don’t expect to. Would I like a lock that keeps my hands out of the blade path? Yeah, but this is as close to perfection as a framelock can get, so I can’t bitch too much.

Zero Tolerance 0900 Review – Final Thoughts

My complaints are pretty minor: I’d like a thinner grind, a different clip, and maybe a bit of weight off the whole package, but those are wants, not needs. It’s exciting enough that Zero Tolerance took a step into the sub-3” category. I hope the 0900 – and the 0450, and the 0808, for that matter – sell well enough that ZT pays more attention to this share of the market. If the recent runs in blue and gold are any indication, that’s exactly what’s happening.

There is some stiff competition for the 0900. The “little big knife” concept has been around for awhile, and other companies have been doing a lot to refine their own offerings. Spyderco’s Techno and DPx’s HEAT/F are fairly popular and fall in the same price bracket. How does the 0900 stack up to those two? Pretty well, actually. The hollow full flat how is this not a hollow grind of the Techno beats out the flat grind of the 0900, but the George design has better ergonomics and the benefit of a steel lockbar insert. While I’m sure the HEAT/F makes for a great rescue knife, it’s far too chunky for everyday tasks, so I think the 0900 has the edge here as well.

I’ve pigheadedly prided myself on steering as clear as I can from the whole TFF market. I don’t like it when a meta (to use gamer jargon) is solved; in my view, it leads to more iteration at the expense of innovation. My problem is that the 0900 is good enough to shut down any objective complaints I have about a titanium flipper framelock. When those issues are solved, my recalcitrance rings less of legitimate criticism, and more of hipster-ism. If you like flippers already, chances are you’ll like the 0900. If you don’t, this is a great (albeit expensive) way to test the waters.

I recommend purchasing the Zero Tolerance 0900 at Amazon and BladeHQ. Please consider that purchasing anything through any of the links on this website helps support BladeReviews.com, and keeps the site going. As always, any and all support is greatly appreciated. Thank you very much.